Method and apparatus for determining the pressure drop and circu

Details Method and apparatus for determining the pressure drop and circu Method and apparatus for determining the pressure drop and circu

1978-07-07

1979-05-22

Woodiel, Donald O.

Measuring and testing

With fluid pressure

Porosity or permeability

73 377, G01M 326

Patent

active

041552482

ABSTRACT:
The pressure drop through and the circumference of filter rods for cigarette filters or the like are determined by a completely automated rod test station that consists of a measuring unit and a computer. The measuring unit has a transport system for rapidly moving a filter rod first into a pressure drop gauge and next into a pneumatic circumference gauge and then ejecting it. A single pressure transducer in the measuring unit detects the pressure drops across the standard, through the filter rod in the pressure drop gauge and through the annular passage between the rod and die in the circumference gauge. The analog electrical signals produced by the transducer are converted to digital signals which are input to a computer. The computer corrects the measured signals indicative of pressure drop in accordance with any error detected between the measured drop across the calibration standard and a stored internal constant representing the calibrated pressure drop for the standard during each test sequence. The computer also stores the calibration information for the circumference gauge and computes the circumference. The computer outputs are available for digital display or any other desired use. The computer also controls the operating cycle of the measuring unit.

REFERENCES:
patent: 3585844 (1971-06-01), Dorneiffer
patent: 3991605 (1976-11-01), Reuland

Affiliated with

Also associated with

Rating

Method and apparatus for determining the pressure drop and circu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for determining the pressure drop and circu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining the pressure drop and circu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1035002